Package org.apache.cassandra.dht

Class Token.KeyBound

java.lang.Object

org.apache.cassandra.dht.Token.KeyBound

All Implemented Interfaces:

Comparable<PartitionPosition>, PartitionPosition, RingPosition<PartitionPosition>, ByteComparable

Enclosing class:

Token

public static class Token.KeyBound
extends Object
implements PartitionPosition

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.cassandra.utils.bytecomparable.ByteComparable

ByteComparable.Version

Nested classes/interfaces inherited from interface org.apache.cassandra.db.PartitionPosition

PartitionPosition.ForKey, PartitionPosition.Kind, PartitionPosition.RowPositionSerializer

Field Summary

Fields

Modifier and Type	Field	Description
final boolean	isMinimumBound

Fields inherited from interface org.apache.cassandra.utils.bytecomparable.ByteComparable

EMPTY

Fields inherited from interface org.apache.cassandra.db.PartitionPosition

serializer

Method Summary

Modifier and Type	Method	Description
ByteComparable	asComparableBound(boolean before)	Produce a byte-comparable representation for the position before or after the key.
ByteSource	asComparableBytes(ByteComparable.Version version)	Produce a prefix-free byte-comparable representation of the key, i.e.
int	compareTo(PartitionPosition pos)
boolean	equals(Object obj)
IPartitioner	getPartitioner()
Token	getToken()
int	hashCode()
boolean	isMinimum()
PartitionPosition.Kind	kind()
Token.KeyBound	minValue()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.cassandra.utils.bytecomparable.ByteComparable

byteComparableAsString

Field Details

isMinimumBound

public final boolean isMinimumBound

Method Details

getToken

public Token getToken()

Specified by:

getToken in interface RingPosition<PartitionPosition>

compareTo

public int compareTo(PartitionPosition pos)

Specified by:

compareTo in interface Comparable<PartitionPosition>

asComparableBytes

public ByteSource asComparableBytes(ByteComparable.Version version)

Description copied from interface: PartitionPosition

Produce a prefix-free byte-comparable representation of the key, i.e. such a sequence of bytes that any pair x, y of valid positions (with the same key column types and partitioner), x.compareTo(y) == compareLexicographicallyUnsigned(x.asComparableBytes(), y.asComparableBytes()) and x.asComparableBytes() is not a prefix of y.asComparableBytes() We use a two-component tuple for decorated keys, and a one-component tuple for key bounds, where the terminator byte is chosen to yield the correct comparison result. No decorated key can be a prefix of another (per the tuple encoding), and no key bound can be a prefix of one because it uses a terminator byte that is different from the tuple separator.

Specified by:

asComparableBytes in interface ByteComparable

Specified by:

asComparableBytes in interface PartitionPosition

asComparableBound

public ByteComparable asComparableBound(boolean before)

Description copied from interface: PartitionPosition

Produce a byte-comparable representation for the position before or after the key. This does nothing for token boundaries (which are already at a position between valid keys), and changes the terminator byte for keys.

Specified by:

asComparableBound in interface PartitionPosition

getPartitioner

public IPartitioner getPartitioner()

Specified by:

getPartitioner in interface RingPosition<PartitionPosition>

minValue

public Token.KeyBound minValue()

Specified by:

minValue in interface RingPosition<PartitionPosition>

isMinimum

public boolean isMinimum()

Specified by:

isMinimum in interface PartitionPosition

Specified by:

isMinimum in interface RingPosition<PartitionPosition>

kind

public PartitionPosition.Kind kind()

Specified by:

kind in interface PartitionPosition

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object